$arrivalDate = “#תאריך הגעה לחו”ל#”;
$departureDate = #תאריך עזיבה#;

$dateDiff = (strtotime($departureDate) – strtotime($arrivalDate)) / (60 * 60 * 24);

if ($dateDiff >= 0) {
$daysCount = $dateDiff + 1;
} else {
$daysCount = “”;
}

return $daysCount;